How to move cab slightly for cab mount alignment

So I am installing the ES cab mount bushings and I need to move the cab slightly rearward on the frame to align this front bushing. I may need to do a bit more alignment later as well... I was considering ratchet straps but not sure how to connect without bending the cab. Ideas?

 

I used 2x4s to finagle the body up off the frame to remove the body mounts. I have been wondering how I'm going to get this thing lined up dropping it back down. Was hoping 2x4s would do the trick again... Maybe am being optimistic... Also I have sliders welded to the frame which give me a good leverage point so, ymmv...

 

I laid on my back and pushed the cab up with my legs. Although I have a single cab. I used blocks and 2x4s, but used my legs for all adjustments

 

Good for leg day

 

Spud wrench from the cab side.